# Optimism proposes Pectra-readiness maintenance for OP Stack chains

> A concrete maintenance payload and operator-upgrade requirement entered governance. The proposal identifies EIP-7702 transaction decoding and the EIP-7685 requestsHash header field as breaking inputs that OP Stack software must support.

- URL: https://riadefi.com/on-chain/2025-02-25-optimism-superchain-upgrade-12-pectra-readiness/
- Type: Upgrade or migration
- Stage: Proposed
- Evidence: confirmed
- Materiality: material
- Event date: 2025-02-25
- Version: 1, published 2026-08-22 (first published 2026-08-22)
- Advisor-relevant: no
- Affects: Optimism canonical bridge (protocol); Base canonical bridge (protocol)

## What happened

Optimism published Upgrade Proposal #12 to make OP Stack node software, protocol specifications, and L1 fault-proof contracts compatible with Ethereum Pectra.

## What changed

A concrete maintenance payload and operator-upgrade requirement entered governance. The proposal identifies EIP-7702 transaction decoding and the EIP-7685 requestsHash header field as breaking inputs that OP Stack software must support.

## What did not change

Within the February window this was a proposal, not evidence that every OP Stack chain or canonical bridge had completed the upgrade. The proposal says it does not change fee take, governor/servicer roles, ossified gas limits, or related authorization structures.

## Confirmed

- The official proposal was published on February 25, 2025.
- It states that unmodified OP Stack chains could suffer a safe-head stall, sequencing-window expiry, and a large reorganization after Pectra activates on their L1.
- It covers node software, protocol specifications, and fault-proof contracts and anticipates no downtime if applied before the relevant L1 activation.

## Still open

- Approval, execution, and chain-by-chain operator adoption were not established within the backfill window.
- The manifest does not receipt bridge-specific deployment state for Optimism or Base.

## What it means for an advisor

- Require bridge diligence to verify Pectra-ready node and fault-proof deployments before treating the Optimism and Base canonical bridges as operationally unchanged.
- Keep current bridge approvals under review until implementation receipts, not merely governance approval, are documented.

## Sources

1. [Upgrade Proposal #12: L1 Pectra Readiness](https://gov.optimism.io/t/upgrade-proposal-12-l1-pectra-readiness/9706) · Optimism Collective · 2025-02-25


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Published by Ketju Research on RIADeFi (https://riadefi.com). Educational research for financial professionals; not investment, legal, tax, or compliance advice.